E. Coli Contaminates Portland, Ore., Tap Water

All of Portland, Ore., was told Friday to boil its tap water after the city found E. coli in water samples.

An alert sent to people who live in the city and nearby warned that they "should boil all tap water used for drinking, food preparation, tooth brushing and ice for at least one minute. Ice or any beverages prepared with un-boiled tap water on or after May 20 should be discarded."

In all, 670,000 customers are under the order, health officials said at a news conference. "Animal waste" — fecal matter — in the water was the likely source of the E. coli, they said.

"We're not using ice, we're not using anything that's not hot," Yli-Luoma said. "But we're also informing the customers about what the situation is. And if they want to drink at their own risk, they can."

This is the second water problem in two months for Portland. In April, the Portland Water Bureau diverted nearly 36 million gallons of water from a reservoir after officials feared it was tainted by a teenager's urine.